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Kremersite

Year of discovery: 1853 (Monte Vesuvius, Italy), 2002 (Japan)

Locality list: A locality of kremersite

• (NH₄)₂FeCl₅,H₂O
• (NH₄,K)₂FeCl₅,H₂O
• [(NH₄)₂]²⁺[Fe³⁺][Cl₅(H₂O)]^5-

• Class: Ammonium - Chloride - Hydrate
• Soluble in: Water
• Radioactive: Very weak
• Deliquescent

• NH₄ => K: Erythrosiderite

• Color: Brown, Red
• Luster: Vitreous
• Diaphaneity: Transparent

• Cleavage: Perfect on {210} and {011} (4 planes)
• Density: 2.2

• System: Orthorhombic
• Group: mmm, Pmnb
• Lattice: a=9.8, b=13.7, c=7.0